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<img src="http://www.bbc.co.uk/staticarchive/034581805d14c8add73e4762c87feb61595bb7d3.jpg" width="600" height="630" alt="(c) Rupert Goodwins" />
This central standing stone is engraved with mysterious ancient symbols known as 'cup and ring marks'. Photographs (c) Rupert Goodwins
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